Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 408 · 40 questions

Thinking tip (Enough facts, then decide): Not enough evidence: “One mango was sour, so all are sour.” Enough: “We checked all 40 mangoes; every one was ripe.” Before you answer, check every fact you need is given. 7 rows with 9 in each → 7 × 9 = 63. “A box has 9 in each row” with no number of rows → not enough info. Missing facts hide in words like “and a bag”, “older” (by how much?) and “a long film” (how long?).

1. 1.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
2. 2.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
3. 3.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) no mango is sweet (c) yes, mangoes match (d) yes, it is certain
4. 4.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 9 PM (c) 7 PM (d) not enough info
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
6. 6.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
7. 7.🧩 Diya bought 6 pens for ₹360 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹60 (c) ₹360 (d) ₹65
8. 8.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
10. 10.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 2 PM (d) 4 PM
11. 11.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM
12. 12.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
13. 13.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Tara is 8 years old. Ishaan is 5 years older than Tara. How old is Ishaan? (a) 5 (b) 13 (c) not enough info (d) 14
15. 15.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 2 PM (c) 3 PM (d) not enough info
16. 16.🧩 A box has 5 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 20 (b) not enough info (c) 24 (d) 9
17. 17.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
18. 18.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
19. 19.🧩 A box has 3 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) not enough info (b) 12 (c) 27 (d) 36
20. 20.🧩 Ishaan is 8 years old. Meera is 5 years older than Ishaan. How old is Meera? (a) 5 (b) not enough info (c) 14 (d) 13
21. 21.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
22. 22.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
23. 23.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
24. 24.🧩 Ananya bought 5 balls and a cap for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹24 (b) not enough info (c) ₹115 (d) ₹120
25. 25.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Ishaan bought 4 pens and a water bottle for ₹190 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹186 (c) ₹47 (d) ₹190
27. 27.🧩 Arjun is 6 years old. Nisha is older than Arjun. How old is Nisha? (a) 8 (b) 11 (c) 7 (d) not enough info
28. 28.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
29. 29.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) what facts are given (d) the page number
30. 30.🧩 Meera is 10 years old. Kabir is 7 years older than Meera. How old is Kabir? (a) 17 (b) 7 (c) 18 (d) not enough info
31. 31.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
32. 32.🧩 Arjun is 9 years old. Meera is older than Arjun. How old is Meera? (a) 14 (b) not enough info (c) 11 (d) 10
33. 33.🧩 Tara is 9 years old. Saanvi is 2 years older than Tara. How old is Saanvi? (a) 2 (b) 12 (c) 11 (d) not enough info
34. 34.🧩 Saanvi is 7 years old. Ishaan is 5 years older than Saanvi. How old is Ishaan? (a) 5 (b) 12 (c) 13 (d) not enough info
35. 35.🧩 Tara bought 2 pens and a bag for ₹180 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹180 (c) ₹90 (d) ₹178
36. 36.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
37. 37.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
38. 38.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 5 PM (c) 8 PM (d) not enough info
39. 39.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 18 (b) 90 (c) 9 (d) not enough info
40. 40.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True

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